What did the North Koreans say?

After the talks broke down, North Korean officials contradicted Mr Trump's contention that a sticking point was Pyongyang's demand for total sanctions relief.

Foreign Minister Ri Yong-ho said the nation had only asked for partial sanctions relief in exchange for disabling its main nuclear complex at Yongbyon and permanently halting nuclear and long-range rocket testing.

"This proposal was the biggest denuclearisation measure we could take at the present stage when taking into consideration the current level of confidence between the DPRK [North Korea] and the United States," said Mr Ri.

North Korea's state-run media struck an upbeat tone on Friday, without mentioning that the summit had ended early.

News agency KCNA said the two leaders had promised to remain in touch in order to continue the "epochal development" of bilateral relations and the denuclearisation of the Korean peninsula.

"The top leaders of the two countries highly appreciated at the one-on-one talks and extended talks that a remarkable progress has been made in the historic course of implementing the Singapore joint statement," said KCNA.

What's the reaction?

On Friday, Mr Trump tweeted: "I never like being misinterpreted, but especially when it comes to Otto Warmbier and his great family."

He said that Warmbier and his family "have become a tremendous symbol of strong passion and strength, which will last for many years into the future".

"I love Otto and think of him often!" he added.

It comes after Democrats led criticism of the president, pointing out that Mr Trump has previously sided with strongmen.

After meeting Russian President Vladimir Putin in Helsinki in July 2018, the US president said he believed his denial that the Kremlin sought to interfere in the 2016 US election, despite US intelligence officials concluding otherwise.

Critics also pointed out that last December, Mr Trump defended Saudi Crown Prince Mohammed bin Salman despite CIA officials' belief that the royal had ordered the gruesome murder of a US-based reporter, Jamal Khashoggi.

Later on Friday, White House aide Kellyanne Conway said Mr Trump "agrees with the Warmbier family and holds North Korea responsible" for their son's death.

"He has deep affection and shares the grief with the Warmbier family," she told Fox News.

"What the president is saying is that there's no indication Chairman Kim knew what happened to Otto Warmbier when it happened," she added.

Russian media trash Trump

By BBC Monitoring

Russian state-controlled media - once quite the fans of Donald Trump - were scathing about the US president's performance at the talks.

A Channel One report from the summit said it had "failed miserably, dealing another blow to the reputation of the American leader".

Over on Rossiya 1 TV, a presenter said the outcome was "predictable", as Mr Trump had "arrived at the new summit with old tactics", while NTV pointed out that Russia had warned Washington's "position of ultimatums" would not work.

In the papers, the independent Novaya Gazeta looks on the bright side, saying that the leaders - while "still extremely far from the Nobel Peace Prize" - have at least stopped swapping insults.

But in mass tabloid Moskovsky Komsomolets, one pundit is withering, saying one "has to understand the core of a subject to make compromises, while Trump is the most ignorant head of state in US history".